Mercurial > hg > nginx
annotate src/mail/ngx_mail_pop3_module.c @ 9293:22f6716fe23d
Version bump.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Sun, 16 Jun 2024 04:15:43 +0300 |
parents | 4538c1ffb0f8 |
children |
rev | line source |
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521 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4412 | 4 * Copyright (C) Nginx, Inc. |
521 | 5 */ |
6 | |
7 | |
8 #include <ngx_config.h> | |
9 #include <ngx_core.h> | |
10 #include <ngx_event.h> | |
1136 | 11 #include <ngx_mail.h> |
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12 #include <ngx_mail_pop3_module.h> |
521 | 13 |
14 | |
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15 static void *ngx_mail_pop3_create_srv_conf(ngx_conf_t *cf); |
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16 static char *ngx_mail_pop3_merge_srv_conf(ngx_conf_t *cf, void *parent, |
521 | 17 void *child); |
18 | |
19 | |
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20 static ngx_str_t ngx_mail_pop3_default_capabilities[] = { |
527 | 21 ngx_string("TOP"), |
22 ngx_string("USER"), | |
23 ngx_string("UIDL"), | |
24 ngx_null_string | |
25 }; | |
26 | |
27 | |
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28 static ngx_conf_bitmask_t ngx_mail_pop3_auth_methods[] = { |
1136 | 29 { ngx_string("plain"), NGX_MAIL_AUTH_PLAIN_ENABLED }, |
30 { ngx_string("apop"), NGX_MAIL_AUTH_APOP_ENABLED }, | |
31 { ngx_string("cram-md5"), NGX_MAIL_AUTH_CRAM_MD5_ENABLED }, | |
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32 { ngx_string("external"), NGX_MAIL_AUTH_EXTERNAL_ENABLED }, |
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33 { ngx_string("xoauth2"), NGX_MAIL_AUTH_XOAUTH2_ENABLED }, |
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34 { ngx_string("oauthbearer"), NGX_MAIL_AUTH_OAUTHBEARER_ENABLED }, |
800 | 35 { ngx_null_string, 0 } |
36 }; | |
37 | |
38 | |
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39 static ngx_str_t ngx_mail_pop3_auth_methods_names[] = { |
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40 ngx_string("PLAIN"), |
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41 ngx_string("LOGIN"), |
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42 ngx_null_string, /* APOP */ |
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43 ngx_string("CRAM-MD5"), |
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44 ngx_string("EXTERNAL"), |
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45 ngx_string("XOAUTH2"), |
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46 ngx_string("OAUTHBEARER"), |
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47 ngx_null_string /* NONE */ |
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48 }; |
809 | 49 |
50 | |
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51 static ngx_mail_protocol_t ngx_mail_pop3_protocol = { |
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52 ngx_string("pop3"), |
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53 ngx_string("\x04pop3"), |
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54 { 110, 995, 0, 0 }, |
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55 NGX_MAIL_POP3_PROTOCOL, |
521 | 56 |
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57 ngx_mail_pop3_init_session, |
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58 ngx_mail_pop3_init_protocol, |
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59 ngx_mail_pop3_parse_command, |
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60 ngx_mail_pop3_auth_state, |
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61 |
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62 ngx_string("-ERR internal server error" CRLF), |
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63 ngx_string("-ERR SSL certificate error" CRLF), |
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64 ngx_string("-ERR No required SSL certificate" CRLF) |
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65 }; |
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66 |
587 | 67 |
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68 static ngx_command_t ngx_mail_pop3_commands[] = { |
521 | 69 |
527 | 70 { ngx_string("pop3_capabilities"), |
1136 | 71 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, |
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72 ngx_mail_capabilities, |
1136 | 73 NGX_MAIL_SRV_CONF_OFFSET, |
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74 offsetof(ngx_mail_pop3_srv_conf_t, capabilities), |
527 | 75 NULL }, |
76 | |
1136 | 77 { ngx_string("pop3_auth"), |
78 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, | |
800 | 79 ngx_conf_set_bitmask_slot, |
1136 | 80 NGX_MAIL_SRV_CONF_OFFSET, |
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81 offsetof(ngx_mail_pop3_srv_conf_t, auth_methods), |
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82 &ngx_mail_pop3_auth_methods }, |
800 | 83 |
521 | 84 ngx_null_command |
85 }; | |
86 | |
87 | |
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88 static ngx_mail_module_t ngx_mail_pop3_module_ctx = { |
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89 &ngx_mail_pop3_protocol, /* protocol */ |
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90 |
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91 NULL, /* create main configuration */ |
521 | 92 NULL, /* init main configuration */ |
93 | |
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94 ngx_mail_pop3_create_srv_conf, /* create server configuration */ |
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95 ngx_mail_pop3_merge_srv_conf /* merge server configuration */ |
521 | 96 }; |
97 | |
98 | |
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99 ngx_module_t ngx_mail_pop3_module = { |
521 | 100 NGX_MODULE_V1, |
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101 &ngx_mail_pop3_module_ctx, /* module context */ |
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102 ngx_mail_pop3_commands, /* module directives */ |
1136 | 103 NGX_MAIL_MODULE, /* module type */ |
541 | 104 NULL, /* init master */ |
521 | 105 NULL, /* init module */ |
541 | 106 NULL, /* init process */ |
107 NULL, /* init thread */ | |
108 NULL, /* exit thread */ | |
109 NULL, /* exit process */ | |
110 NULL, /* exit master */ | |
111 NGX_MODULE_V1_PADDING | |
521 | 112 }; |
113 | |
114 | |
115 static void * | |
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116 ngx_mail_pop3_create_srv_conf(ngx_conf_t *cf) |
577 | 117 { |
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118 ngx_mail_pop3_srv_conf_t *pscf; |
641 | 119 |
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120 pscf = ngx_pcalloc(cf->pool, sizeof(ngx_mail_pop3_srv_conf_t)); |
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121 if (pscf == NULL) { |
527 | 122 return NULL; |
521 | 123 } |
124 | |
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125 if (ngx_array_init(&pscf->capabilities, cf->pool, 4, sizeof(ngx_str_t)) |
1136 | 126 != NGX_OK) |
127 { | |
128 return NULL; | |
129 } | |
130 | |
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131 return pscf; |
521 | 132 } |
133 | |
134 | |
135 static char * | |
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136 ngx_mail_pop3_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) |
521 | 137 { |
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138 ngx_mail_pop3_srv_conf_t *prev = parent; |
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139 ngx_mail_pop3_srv_conf_t *conf = child; |
521 | 140 |
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141 u_char *p; |
1136 | 142 size_t size, stls_only_size; |
527 | 143 ngx_str_t *c, *d; |
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144 ngx_uint_t i, m; |
1136 | 145 |
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146 ngx_conf_merge_bitmask_value(conf->auth_methods, |
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147 prev->auth_methods, |
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148 (NGX_CONF_BITMASK_SET |
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149 |NGX_MAIL_AUTH_PLAIN_ENABLED)); |
800 | 150 |
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151 if (conf->auth_methods & NGX_MAIL_AUTH_PLAIN_ENABLED) { |
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152 conf->auth_methods |= NGX_MAIL_AUTH_LOGIN_ENABLED; |
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153 } |
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154 |
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155 if (conf->capabilities.nelts == 0) { |
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156 conf->capabilities = prev->capabilities; |
800 | 157 } |
158 | |
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159 if (conf->capabilities.nelts == 0) { |
527 | 160 |
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161 for (d = ngx_mail_pop3_default_capabilities; d->len; d++) { |
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162 c = ngx_array_push(&conf->capabilities); |
527 | 163 if (c == NULL) { |
164 return NGX_CONF_ERROR; | |
165 } | |
166 | |
167 *c = *d; | |
168 } | |
169 } | |
170 | |
171 size = sizeof("+OK Capability list follows" CRLF) - 1 | |
172 + sizeof("." CRLF) - 1; | |
173 | |
1136 | 174 stls_only_size = size + sizeof("STLS" CRLF) - 1; |
175 | |
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176 c = conf->capabilities.elts; |
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177 for (i = 0; i < conf->capabilities.nelts; i++) { |
527 | 178 size += c[i].len + sizeof(CRLF) - 1; |
1136 | 179 |
180 if (ngx_strcasecmp(c[i].data, (u_char *) "USER") == 0) { | |
181 continue; | |
182 } | |
183 | |
184 stls_only_size += c[i].len + sizeof(CRLF) - 1; | |
527 | 185 } |
186 | |
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187 size += sizeof("SASL") - 1 + sizeof(CRLF) - 1; |
809 | 188 |
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189 for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0; |
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190 m < NGX_MAIL_AUTH_NONE_ENABLED; |
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191 m <<= 1, i++) |
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192 { |
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193 if (ngx_mail_pop3_auth_methods_names[i].len == 0) { |
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194 continue; |
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195 } |
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196 |
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197 if (m & conf->auth_methods) { |
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198 size += 1 + ngx_mail_pop3_auth_methods_names[i].len; |
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199 } |
809 | 200 } |
201 | |
2049 | 202 p = ngx_pnalloc(cf->pool, size); |
583 | 203 if (p == NULL) { |
527 | 204 return NGX_CONF_ERROR; |
205 } | |
206 | |
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207 conf->capability.len = size; |
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208 conf->capability.data = p; |
583 | 209 |
210 p = ngx_cpymem(p, "+OK Capability list follows" CRLF, | |
211 sizeof("+OK Capability list follows" CRLF) - 1); | |
527 | 212 |
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213 for (i = 0; i < conf->capabilities.nelts; i++) { |
583 | 214 p = ngx_cpymem(p, c[i].data, c[i].len); |
215 *p++ = CR; *p++ = LF; | |
527 | 216 } |
217 | |
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218 p = ngx_cpymem(p, "SASL", sizeof("SASL") - 1); |
809 | 219 |
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220 for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0; |
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221 m < NGX_MAIL_AUTH_NONE_ENABLED; |
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222 m <<= 1, i++) |
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223 { |
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224 if (ngx_mail_pop3_auth_methods_names[i].len == 0) { |
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225 continue; |
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226 } |
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227 |
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228 if (m & conf->auth_methods) { |
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229 *p++ = ' '; |
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230 p = ngx_cpymem(p, ngx_mail_pop3_auth_methods_names[i].data, |
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231 ngx_mail_pop3_auth_methods_names[i].len); |
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232 } |
809 | 233 } |
234 | |
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235 *p++ = CR; *p++ = LF; |
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236 |
583 | 237 *p++ = '.'; *p++ = CR; *p = LF; |
238 | |
239 | |
240 size += sizeof("STLS" CRLF) - 1; | |
527 | 241 |
2049 | 242 p = ngx_pnalloc(cf->pool, size); |
583 | 243 if (p == NULL) { |
244 return NGX_CONF_ERROR; | |
245 } | |
246 | |
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247 conf->starttls_capability.len = size; |
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248 conf->starttls_capability.data = p; |
583 | 249 |
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250 p = ngx_cpymem(p, conf->capability.data, |
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251 conf->capability.len - (sizeof("." CRLF) - 1)); |
583 | 252 |
253 p = ngx_cpymem(p, "STLS" CRLF, sizeof("STLS" CRLF) - 1); | |
254 *p++ = '.'; *p++ = CR; *p = LF; | |
527 | 255 |
256 | |
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257 size = sizeof("+OK methods supported:" CRLF) - 1 |
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258 + sizeof("." CRLF) - 1; |
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259 |
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260 for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0; |
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261 m < NGX_MAIL_AUTH_NONE_ENABLED; |
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262 m <<= 1, i++) |
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263 { |
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264 if (ngx_mail_pop3_auth_methods_names[i].len == 0) { |
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265 continue; |
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266 } |
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267 |
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268 if (m & conf->auth_methods) { |
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269 size += ngx_mail_pop3_auth_methods_names[i].len |
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270 + sizeof(CRLF) - 1; |
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271 } |
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272 } |
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273 |
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274 p = ngx_pnalloc(cf->pool, size); |
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275 if (p == NULL) { |
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276 return NGX_CONF_ERROR; |
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277 } |
809 | 278 |
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279 conf->auth_capability.data = p; |
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280 conf->auth_capability.len = size; |
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281 |
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282 p = ngx_cpymem(p, "+OK methods supported:" CRLF, |
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283 sizeof("+OK methods supported:" CRLF) - 1); |
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284 |
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285 for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0; |
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286 m < NGX_MAIL_AUTH_NONE_ENABLED; |
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287 m <<= 1, i++) |
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288 { |
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289 if (ngx_mail_pop3_auth_methods_names[i].len == 0) { |
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290 continue; |
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291 } |
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292 |
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293 if (m & conf->auth_methods) { |
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294 p = ngx_cpymem(p, ngx_mail_pop3_auth_methods_names[i].data, |
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295 ngx_mail_pop3_auth_methods_names[i].len); |
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296 *p++ = CR; *p++ = LF; |
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297 } |
809 | 298 } |
299 | |
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300 *p++ = '.'; *p++ = CR; *p = LF; |
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301 |
809 | 302 |
2049 | 303 p = ngx_pnalloc(cf->pool, stls_only_size); |
1136 | 304 if (p == NULL) { |
305 return NGX_CONF_ERROR; | |
306 } | |
307 | |
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308 conf->starttls_only_capability.len = stls_only_size; |
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309 conf->starttls_only_capability.data = p; |
1136 | 310 |
311 p = ngx_cpymem(p, "+OK Capability list follows" CRLF, | |
312 sizeof("+OK Capability list follows" CRLF) - 1); | |
313 | |
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314 for (i = 0; i < conf->capabilities.nelts; i++) { |
1136 | 315 if (ngx_strcasecmp(c[i].data, (u_char *) "USER") == 0) { |
316 continue; | |
317 } | |
318 | |
319 p = ngx_cpymem(p, c[i].data, c[i].len); | |
320 *p++ = CR; *p++ = LF; | |
321 } | |
322 | |
323 p = ngx_cpymem(p, "STLS" CRLF, sizeof("STLS" CRLF) - 1); | |
324 *p++ = '.'; *p++ = CR; *p = LF; | |
325 | |
521 | 326 return NGX_CONF_OK; |
327 } |